What size is the bottom bracket on this bike
- Thread starter Staniland
- Start date
Not sure if anyone could tell you unless they have the same frame with the same cranks. I can tell you how to measure it though.
If the bottom bracket is a square taper or similar sealed unit (Octalink, Powerspline, etc) and you can get the old one out (I'm guessing you can if you're replacing it), just take the old one out it will most likely have the two sizes you need written on it - most do. If not, take it out and measure the BB shell on the frame (this will be 68mm or 73mm) and the spindle length (end to end).
If they're through axle type cranks (two piece type things), you need to buy the BB that matches your cranks. You don't need a spindle length measurement but you do need a BB shell measurement to space it right (the BB will come with spacers).
If the bottom bracket is a square taper or similar sealed unit (Octalink, Powerspline, etc) and you can get the old one out (I'm guessing you can if you're replacing it), just take the old one out it will most likely have the two sizes you need written on it - most do. If not, take it out and measure the BB shell on the frame (this will be 68mm or 73mm) and the spindle length (end to end).
If they're through axle type cranks (two piece type things), you need to buy the BB that matches your cranks. You don't need a spindle length measurement but you do need a BB shell measurement to space it right (the BB will come with spacers).
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99% sure it will be a 73mm shell same as my 97 Rockhopper FS, length depends on chainset that you are fitting 
